Bucket lip



Sept. 27, 1932. PAGE 1,879,447

BUCKET LIP F le y 3 1931 4 Sheets-Sheet 1 f7: {6 71 f0 1' J07! 72 M Faye,

J. W. PAGE Sept. 27, 1932.

BUCKET LIP Filed July I5, 1931 4 Sheets-Sheet 2 fix L n Z07; JEYZTZ Zlf Faye,

Sept. 27, 1932- J. w. PAGE BUCKET LIP Filed July 5, 1931 4 Sheets-Sheet 5 7/6 71 f0?" @7671 n 21/.- 2 a 76.

J. W. PAGE Sept. 27, 1932.

BUCKET LIP Filed July 5, 1931 4 Sheets-Sheet 4 f/zfintor: L 07172 Mfaye,

Patented Sept. 27, 1932 UNITED STATES PATENT OFFICE JOHN W. PAGE, OF CHICAGO, ILLINOIS BUCKET LIP This invention relates to improvements in bucket construction and applies more particularly to excavating or digging buckets, for example, buckets of the drag line type.

Among the features of my invention is the.

provision of improved bucket construction embodying the use of cast members on the sides of the bucket for reinforcing and stiffening purposes.

Another feature of my invention 15 the provision of a bucket lip preferably made out of cast metal and so constructed that it will have sullicient strength and rigidity to reinforce the forward part of a bucket that ordinarily is subjected to severe and hard usage.

Another feature of my invention 15 the provision of such a lip that is provided with bracing plates adapted to support the lower edges of the side walls of the bucket.

Another feature of my invention is the provision of horizontal supporting plates on the lip adapted to support horizontal stilfening members attached to the side wall of a bucket or spacing members at the lower edges of the side walls of a double-walled bucket. Such horizontal supporting plates are also adapted to carry castings attached to the side walls of the bucket, such castings serving to tie together the lip, the hood or arch of the bucket, the side walls or bucket proper and the hitchplate.

Other features and advantages of my 1nvention will appear more fully as I proceed with my specification.

In those forms of devices embodying the features of my invention shown in the accompanying drawings- Figure 1 is a top plan view of the lip; Fig. 2 is a view in front elevation; Fig. 3 is a view in side elevation; Fig. 4 is a view taken as indicated by the line 4 of Fig. 1; Fig. 5 is a view taken as indicated by the line 5 of Fig. 3; Fig. 6 is a view in side elevation of a single-wall bucket showing the use of my improved lip thereon; Fig. 7 is a view taken as indicated by the line 7 of Fig. 6; Fig. 8 is a view on an enlarged scale of the lower part of the construction shown in Fig. 7 Fig. 9 is a view in side elevation of another t e of bucket using a reinforcing casting on t e side showing the use of my improved lip; Fig. 10 1s a view taken as indicated by the line 10 of Flg. 9; Fig. 11 is a view on an enlarged scale of the lower part of the construction shown in Fig. 10; Fig. 12 is a View in side elevatlon of a double-walled bucket showing my 1mproved lip; Fig. 13 is a. view taken as indicated by the line 13 of Fig. 12; and Fig. 14 is a view on an enlarged scale of the lower portion of the construction shown in Fig. 13. As shown in the drawings, the lip alone is illustrated in Figs. 1 to 5, inclusive. In the other views, the lip is shown employed with three different kinds of buckets. Figs. 6, 7 and 8 show a single-walled bucket; Figs. 9, 10 and 11 show a bucket with reinforcing castings on the side; and Figs. 12, 13 and 14 show a bucket with double side walls.

As shown in the drawings, the lip is preferably formed of cast metal. It includes'a lower portion 10. the forward or cutting edge of which is 'indicatedby 10. This cutting edge may be provided with suitable members or studs 11 adapted to receive tooth points of well-known construction. The tooth construction forms no part of the present invention and, consequently, will not be described herein.

Numerals 12, 12 indicate the side walls of the lip. The point of attachment of the side walls 12 to the cutting edge 10 is indicated by 10". One of the important features of the invention is the outward bowing or curvature of the front edges 12 of the side walls. Reference to Fig. 2 will show what is referred to. That is, the forward edge of the side walls 12 is indicated by 12 \Vhen viewed from the front, it will be seen that this edge 12 is bowed outwardly from its lower end 1O (where attached to the cutting edge 10 of the lip) to its upper end 12 It is to be noted that the front edges 12 of the side walls also are slanted backwardly and downwardly. This will be seen by reference to Fig. 3. It will be seen, also, that the extreme front edges 12 of the side walls 12 are bowed out, as described, more than any other portion, this bowing being reduced rearwardly until the side walls become vertical, as indicated by 12, without any outward bowing.

Another important feature of my invention is the provision of the horizontal supporting plates 13 carried by the upper edges of the side walls 12 of the lip. These horizontal supporting plates have several functions and permit the use of the lip with various types of bucket. For example, I have shown an excavating or drag line bucket in Figs. 6, 7 and 8 of a more or less typical construction, the same being provided with the customary single sheet metal side walls 14. In buckets of this kind, difiiculty has been experienced in bracing or stiflening the side wall 14. Oecasionally, when this wall is exposed to pressure from the sides, the same is likely to become dented or wrinkled. In using my improved lip with a bucket of this kind, the horizontal plate 13 permits the support thereon of a stiffening or bracing angle iron 15. This angle iron may be attached to the plate 13 by the rivets 16 and may extend forwardly and backwardly a greater distance than the length of the plate 13. This stiffening angle iron 15 may be attached to the side wall 14 of the bucket by rivets 17. Some of these rivets, as indicated by 17 may extend through vertical bracing plates 18 on the lip to give additional support. These vertical bracing plates 18 will be described more in detail hereinafter.

The horizontal supporting plate 13 extends outwardly over the portion of the front edge of the side wall of the lip that is bowed or curved outwardly. This construction permits the plate 13 to be additionally supported from said bowed-out portion of the side wall of the lip. Such sup ort may be accomplished by the provision o the vertical webs 50, 50.

It is to be noted, also, that the outward bowing of the side walls of the lips is reduced rearwardly until the side walls become vertical, as indicated by 12. Such vertical slde walls 12 at the rear of the lip form substantially a continuation of the vertical side walls of the bucket proper 14. It may be stated, therefore, that the side walls of the lip are bowed outwardly in front and that they merge with the vertical side walls of the bucket at the back of the lip.

The type of bucket shown in Figs. 9, 10 and 11 carries on its sides triangularly shaped reinforcing castings 19 with the vertical bracing ribs 19. For example, such a casting may be used to brace the bucket, stiffening the side walls, or tie together the lip, the hood 20 and the hitch-plate 21. In a bucket of this kind employing such a cast reinforcing member 19, the horizontal plate 13 may be used to support the casting 19. Attachment may be effected to the plate 13 by means of the rivets 22. Additional support may be obtained b means of the rivets 23 through the verticaf bracing plates 18.

In Figs. 12, 13 and 14, I have shown a bucket with double side walls, the inner of these being) indicated by 24 and the outer, by 24. In a ucket so constructed, the lower edges of the double side walls may be separated or spaced by a channel member 25. In this kind of. bucket, the horizontal supporting plates 13 may be used to support the channel member 25, attachment being accomplished by means of the rivets 26. In this case, also, the vertical bracing plate 18 may be used for additional support through the rivets 27.

As stated above, the upper edges of the side walls of the lip also carry vertical brac,

ing plates 18. Certain uses of these plates with the buckets already described have been explained. These plates are arranged substantially at right angles to the horizontal plates 13 along their inner edges and project upwardly. They may be of substantially the same length as the horizontal plates 13, or longer or shorter. In addition to the uses of these plates already explained, it is to be particularly noted that they lie on the inside of the lower edge of the side wall of the bucket and therefore serve as a very strong. effective and rigid brace for such side walls, lessening or preventing said walls from being pushed, broken or bent inwardly when exposed to pressures from the outside.

It is to be particularly noted that the vertical bracing plates 18 lie on the inside of the forward projecting sides of the bucket. Heretofore lip castings have been wrapped around the outside of bucket shell, and when the forward projecting side of the bucket is exposed to inward pressure, it pulls away from the lip casting by stretching the rivets or other means fastening the lip to the side of the bucket. By providing the plates 18 which extend upwardly on the inside of the bucket wall, the side of the bucket is prevented from pulling away from the lip.

It is to be particularly noted also that the outward bulging 12 of the cutting edge on the sides of the lip produces in effect a bracket against the side and greatly increases the strength of the lip in the corner at the point where the vertical side curves into the bottom. This point has always been one hard to reinforce to prevent breakage, and the old way of doing it was to increase the thickness of the metal at this point. By bulging the cutting edge, additional strength is given in a more simple and efficient manner. Bulging the edge in this manner also increases somewhat the amount of material that the bucket will take up when being loaded.

When the reinforcing castings 19 are employed, the side walls 30 of the bucket, as shown in Fig. 9, may be attached to the rear edge of the castings by the rivets 31. The arch or hood 20 may be fastened to the upper edge by the rivets 32 and an extra reinforcing or gusset plate 33 may be employed. The hitch-plate may be attached to the forward edge of the casting 19 by the rivets 34.

While I have shown and described certain embodiments of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, in which it is my intention to claim all novelty inherent in my invention as broadly as permissible, in view of the prior art.

What I regard as new, and desire to secure by Letters Patent, is I 1. In combination with a bucket of the character described including a bottom, side walls, and hitch-plates, a cast metal lip attached to the forward part of the bucket, said lip having a bottom member with a forward cutting edge and side walls, said side walls carrying horizontal supporting plates at their upper edges, and reinforcing members carried by said supporting plates, said members being attached to the side walls of the bucket and carrying said hitch-plates at their forward extremities.

2. In combination with a. bucket having a bottom and substantially vertical side walls, a lip for said bucket having a bottom member with a forward cutting edge and side walls, said side walls of the lip being bowed outwardly in front and merging with the vertical side walls of the bucket at the back of the li 3. Xpparatus as claimed in claim 2, in which the forward edges of the side walls of the lip slant downwardly and backwardly.

4. A lip for a bucket of the character de-' scribed having a bottom member with a forward cutting edge and side walls, said side walls being bowed outwardly and carrying horizontal supporting plates projecting over said outwardly bowed portions.

5. Apparatus as claimed in claim 4, in which the horizontal supporting plates are partially supported by said outwardly bowed portions.

6. Apparatus as claimed in claim 4, in which the side walls of the lip carry vertical bracing plates at their upper edges.

7. Apparatus as claimed in claim 4, in which the side walls of the lip carry vertical bracing plates at their upper edges and in which the horizontal supporting plates are partially supported by said outwardly bowed portions of the side walls of the lip.

In witness whereof, I have hereunto set my hand this 27th day of June, 1931.

JOHN W. PAGE. 

